Telit Wireless Solutions GC864 Series Hardware User's Manual

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2010-06-04

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

APPLICABILITY TABLE

PRODUCT

GC864-QUAD

GC864-PY

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

DISCLAIMER

The information contained in this document is the proprietary information of Telit

Communications S.p.A. and its affiliates (“TELIT”).

The contents are confidential and any disclosure to persons other than the officers,

employees, agents or subcontractors of the owner or licensee of this document,

without the prior written consent of Telit, is strictly prohibited.

Telit makes every effort to ensure the quality of the information it makes available.

Notwithstanding the foregoing, Telit does not make any warranty as to the

information contained herein, and does not accept any liability for any injury, loss or

damage of any kind incurred by use of or reliance upon the information.

Telit disclaims any and all responsibility for the application of the devices

characterized in this document, and notes that the application of the device must

comply with the safety standards of the applicable country, and where applicable,

with the relevant wiring rules.

Telit reserves the right to make modifications, additions and deletions to this

document due to typographical errors, inaccurate information, or improvements to

programs and/or equipment at any time and without notice.

Such changes will, nevertheless be incorporated into new editions of this document.

Copyright: Transmittal, reproduction, dissemination and/or editing of this document

as well as utilization of its contents and communication thereof to others without

express authorization are prohibited. Offenders will be held liable for payment of

damages. All rights are reserved.

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

Contents

APPLICABILITY TABLE.........................................................................................................................................2

1. INTRODUCTION................................................................................................................................6

1.1. SCOPE ........................................................................................................................................................6

1.2. AUDIENCE...................................................................................................................................................6

1.3. CONTACT INFORMATION, SUPPORT.................................................................................................................6

1.4. DOCUMENT ORGANIZATION ...........................................................................................................................7

1.5. TEXT CONVENTIONS .....................................................................................................................................8

1.6. RELATED DOCUMENTS..................................................................................................................................8

1.7. DOCUMENT HISTORY ....................................................................................................................................9

2. OVERVIEW...................................................................................................................................... 11

3. GC864 MECHANICAL DIMENSIONS ................................................................................................ 12

3.1. MECHANICAL VIEW OF TELIT GC864-QUAD WITH SIM HOLDER......................................................................13

4. GC864-QUAD/PY MODULE CONNECTIONS ..................................................................................... 14

4.1. PIN-OUT.................................................................................................................................................14

4.1.1.

GC864-QUAD/PY Antenna Connector............................................................................................17

5. HARDWARE COMMANDS................................................................................................................ 18

5.1. TURNING ON THE GC864-QUAD / PY.........................................................................................................18

5.2. TURNING OFF THE GC864-QUAD / PY .......................................................................................................20

5.2.1.

Hardware Shutdown...................................................................... Error! Bookmark not defined.

5.2.2.

Hardware Unconditional Reboot...................................................................................................21

6. POWER SUPPLY............................................................................................................................. 23

6.1. POWER SUPPLY REQUIREMENTS ..................................................................................................................23

6.2. GENERAL DESIGN RULES............................................................................................................................24

6.2.1.

Electrical Design Guidelines .........................................................................................................24

6.2.2.

Thermal Design Guidelines...........................................................................................................30

6.2.3.

Power Supply PCB Layout Guidelines...........................................................................................31

6.2.4.

Parameters for ATEX Applications................................................................................................32

7. ANTENNA ...................................................................................................................................... 34

7.1. GSM ANTENNA REQUIREMENTS ..................................................................................................................34

7.2. GSM ANTENNA – INSTALLATION GUIDELINES................................................................................................35

8. LOGIC LEVEL SPECIFICATIONS...................................................................................................... 36

8.1. RESET SIGNAL...........................................................................................................................................37

9. SERIAL PORTS ............................................................................................................................... 38

9.1. MODEM SERIAL PORT ...........................................................................................................................38

9.2. RS232 LEVEL TRANSLATION .......................................................................................................................41

9.3. 5V UART LEVEL TRANSLATION ...................................................................................................................43

10. AUDIO SECTION OVERVIEW ........................................................................................................ 45

1.1 SELECTION MODE .............................................................................................................................................45

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1.2 ELECTRICAL CHARACTERISTICS ..........................................................................................................................47

1.2.1 Input Lines Characteristics...................................................................................................................47

1.2.2 Output Lines Characteristics ................................................................................................................48

11. GENERAL PURPOSE I/O ............................................................................................................. 50

11.1. GPIO LOGIC LEVELS ..............................................................................................................................52

11.2. USING A GPIO PAD AS INPUT ................................................................................................................52

11.3. USING A GPIO PAD AS OUTPUT .............................................................................................................53

11.4. USING THE RF TRANSMISSION CONTROL GPIO4 .......................................................................................53

11.5. USING THE RFTXMON OUTPUT GPIO5 ...................................................................................................53

11.6. USING THE ALARM OUTPUT GPIO6 ..........................................................................................................54

11.7. USING THE BUZZER OUTPUT GPIO7.........................................................................................................54

11.8. MAGNETIC BUZZER CONCEPTS ................................................................................................................55

11.8.1.

Short Description...........................................................................................................................55

1.2.1 Frequency Behavior ..............................................................................................................................56

11.8.2.

Power Supply Influence.................................................................................................................56

11.8.3.

Warning..........................................................................................................................................56

11.8.4.

Working Current Influence............................................................................................................57

11.9. USING THE TEMPERATURE MONITOR FUNCTION.........................................................................................57

11.9.1.

Short Description...........................................................................................................................57

11.9.2.

Allowed GPIO .................................................................................................................................57

11.10. INDICATION OF NETWORK SERVICE AVAILABILITY........................................................................................58

11.11. RTC BYPASS OUT ..................................................................................................................................59

11.12. VAUX1 POWER OUTPUT .........................................................................................................................60

12. DAC AND ADC SECTION ............................................................................................................. 61

12.1. DAC CONVERTER ..................................................................................................................................61

12.1.1.

Description.....................................................................................................................................61

12.1.2.

Enabling DAC.................................................................................................................................61

12.1.3.

Low Pass Filter Example...............................................................................................................62

12.2. ADC CONVERTER ..................................................................................................................................62

12.2.1.

Description.....................................................................................................................................62

12.2.2.

Using ADC Converter.....................................................................................................................62

13. MOUNTING THE GC864-QUAD/PY ON THE BOARD ..................................................................... 63

13.1.1.

Debug of the GC864-QUAD/PY in Production ...............................................................................64

14. PACKING SYSTEM ...................................................................................................................... 65

15. CONFORMITY ASSESSMENT ISSUES .......................................................................................... 66

16. SAFETY RECOMMENDATIONS .................................................................................................... 68

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

1. Introduction

1.1. Scope

The aim of this document is the description of some hardware solutions useful for

developing a product with the Telit GC864-QUAD / PY module.

1.2. Audience

This document is intended for Telit customers, who are integrators, about to

implement their applications using our GC864 module.

1.3. Contact Information, Support

For general contact, technical support, to report documentation errors and to order

manuals, contact Telit’s Technical Support Center (TTSC) at:

[email protected]

Alternatively, use:

http://www.telit.com/en/products/technical-support-center/contact.php

For detailed information about where you can buy the Telit modules or for

recommendations on accessories and components visit:

http://www.telit.com

To register for product news and announcements or for product questions contact

Telit’s Technical Support Center (TTSC).

Our aim is to make this guide as helpful as possible. Keep us informed of your

comments and suggestions for improvements.

Telit appreciates feedback from the users of our information.

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

1.4. Document Organization

This document contains the following chapters:

Chapter 1: “Introduction”

provides a scope for this document, target audience,

contact and support information, and text conventions.

Chapter 2: “Overview”

provides an overview of the document.

Chapter 3: “GC864 Mechanical Dimensions”

Chapter 4: “GC864 Module Connections”

deals with the pin out configuration and

layout.

Chapter 5: “Hardware Commands”

How to control the module via hardware.

Chapter 6: “Power supply”

Power supply requirements and general design rules.

Chapter 7: “Antenna”

The antenna connection and board layout design are the most

important parts in the full product design

Chapter 8: “Logic Level specifications”

Specific values adopted in the implementation

of logic levels for this module.

Chapter 9: “Serial ports”

The serial port on the Telit GC864 is the core of the

interface between the module and OEM hardware

Chapter 10: “Audio Section overview”

Refers to the audio blocks of the Base Band

Chip of the GC864 Telit Modules.

Chapter 11: “General Purpose I/O”

How the general purpose I/O pads can be

configured.

Chapter 12 “DAC and ADC Section”

Deals with these two kind of converters.

Chapter 13: “Mounting the GC864 on the application board”

Recommendations and

specifics on how to mount the module on the user’s board.

GC864 Hardware User Guide

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1.5. Text Conventions

Danger

–

This information MUST be followed or catastrophic equipment failure

or bodily injury may occur.

Caution or Warning

–

Alerts the user to important points about integrating the

module, if these points are not followed, the module and end user equipment

may fail or malfunction.

Tip or Information – Provides advice and suggestions that may be useful when

integrating the module.

All dates are in ISO 8601 format, i.e. YYYY-MM-DD.

1.6. Related Documents

• Telit's GSM/GPRS Family Software User Guide, 1vv0300784

• Audio settings application note , 80000NT10007a

• Digital voice Interface Application Note, 80000NT10004a

• GC864 Product description, 80273ST10008a

• SIM Holder Design Guides, 80000NT10001a

• AT Commands Reference Guide, 80000ST10025a

• Telit EVK2 User Guide, 1vv0300704

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

1.7. Document History

R

e

v

i

s

i

o

n

D

a

t

e

C

h

a

n

g

e

s

ISSUE#0 2006-06-12 Release First ISSUE# 0

ISSUE #1 2006-09-07 Full Review of the manual

Added ADC description

Added DAC description

Added Pinout and Process flow description

Added Packaging

ISSUE #2 2006-10-03 TGPIO23 now RESERVED

ISSUE #3 2006-11-07 3.1 (table on page 12); PWRCTL must be PWRMON

ISSUE #4 2007-02-08 Pinout updated, Camera removed, Added Stat Led and GPIO5 description, added

VAUX, schematics updated for On_off, reset, level adapter 5V, RS232

transceiver, Power supply. Modified Charger description.

ISSUE#5 2007-06-07

Updated DISCLAIMER, Added note on charger (CFUN4 and ON_OFF), Added

Power consumptions table, Added new table for GPIO status in Reset and Power

on, added RFTXMON timing, modified DB9 picture in par 8.2, Switching

description modified in “+ 12V input Source Power Supply Design Guidelines”,

Added Alternate Function for GPIO4.

ISSUE#6 2007-06-21

Updated Absolute maximum ratings, Added Alternate Function for GPIO2;

added PWRMON description during ON_OFF, updated chapter

ISSUE#7 2008-05-21

Added GC864-QUAD with SIM holder product p/n

Par 3.1: Removed nominal values on Audio, Added DVI pins descriptions

Par 5.1: Added Supply Voltage Range

Par 10.7: GPIO7 description; added section on Buzzer description

Par 9: Audio section removed (a dedicated User guide on audio has been

created)

Par 5.2.1.4: added note on Charger

Par 8.1: tip on RXD pull up added

11.3 added note on reflow not possible

8.3 pull ups referred to VAUX

10.9 Temperature monitor function added

4.2.2 removed table with logic levels

7 removed reference to buffered pins

ISSUE#8 2008-06-30

Added GC864-QUAD with SIM holder drawings (2.1)

4.1 and 4.22 modified example

7 Updated 1.8V CMOS voltage range

ISSUE#9 2009-01-22

Updated operating voltage and P/N list

Updated GC864-PY with SIM Holder module in the list of modules concerned by

this document

Added useful parameters for ATEX Applications

Updated Audio Block Diagram

ISSUE#10 2009-08-31

Applied new layout + minor editing

Modified idle consumption values

Added on/off/reset block diagrams procedures

Added DVI info in the pin-out section + notice

Added DVI App Note in the related documents list

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

Noted in the pin-out section about rts in need of being connected to ground p.18

Updated all schematic drawings

Updated Chapter 10 Audio Section

ISSUE#11 2009-12-16

Modified power consumption values

Fixed minor adobe acrobat issues

ISSUE#12 2010-06-04

Updated Chapter 7.1 Gain values

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

2. Overview

In this document all the basic functions of a mobile phone are taken into account; for

each one of them a proper hardware solution is suggested and eventually the wrong

solutions and common errors to be avoided are evidenced. Obviously this document

cannot embrace the whole hardware solutions and products that may be designed.

The wrong solutions to be avoided shall be considered as mandatory, while the

suggested hardware configurations shall not be considered mandatory, instead the

information given shall be used as a guide and a starting point for properly

developing your product with the Telit GC864-QUAD / PY module. For further

hardware details that may not be explained in this document refer to the Telit GC864-

QUAD / PY Product Description document where all the hardware information is

reported.

NOTICE:

(EN) The integration of the GSM/GPRS GC864-QUAD / PY cellular module within user

application shall be done according to the design rules described in this manual.

The information presented in this document is believed to be accurate and reliable.

However, no responsibility is assumed by Telit Communications S.p.A. for its use, nor

any infringement of patents or other rights of third parties which may result from its

use. No license is granted by implication or otherwise under any patent rights of Telit

Communications S.p.A. other than for circuitry embodied in Telit products. This

document is subject to change without notice.

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

3. GC864 Mechanical Dimensions

The Telit GC864-QUAD/PY module overall dimensions are:

• Length: 36.2 mm

• Width: 30 mm

• Thickness: 3.2 mm

GC864 Hardware User Guide

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3.1. Mechanical View of Telit GC864-QUAD with SIM Holder

GC864 Hardware User Guide

1vv0300733 Rev.12 – 2009-06-04

4. GC864-QUAD/PY Module Connections

4.1. PIN-OUT

The GC864-QUAD/PY uses a 80 pin Molex p.n. 53949-0878 male connector for the

connections with the external applications. This connector matches the 54150-0878

models.

Pin Signal I/O Function

Internal

Pull up

Type

Power Supply

1 VBATT - Main power supply Power

2 VBATT - Main power supply Power

3 VBATT - Main power supply Power

4 VBATT - Main power supply Power

5 GND - Ground Power

6 GND - Ground Power

7 GND - Ground Power

Audio

8 AXE I Handsfree switching 100K

Ω

CMOS 2.8V

9 EAR_HF+ AO Handsfree ear output, phase + Audio

10 EAR_HF- AO Handsfree ear output, phase - Audio

11 EAR_MT+ AO Handset earphone signal output, phase + Audio

12 EAR_MT- AO Handset earphone signal output, phase - Audio

13 MIC_HF+ AI Handsfree microphone input; phase Audio

14 MIC_HF- AI Handsfree microphone input; phase Audio

15 MIC_MT+ AI Handset microphone signal input; phase+ Audio

16 MIC_MT- AI Handset microphone signal input; phase- Audio

SIM Card Interface

18

1

SIMVCC - External SIM signal – Power supply for the SIM 1.8 / 3V

19 SIMRST O External SIM signal – Reset 1.8 / 3V

20 SIMIO I/O External SIM signal - Data I/O 1.8 / 3V

21 SIMIN I External SIM signal - Presence (active low) 47K

Ω

1.8 / 3V

22 SIMCLK O External SIM signal – Clock 1.8 / 3V

Trace

23 RX_TRACE I RX Data for debug monitor/ DVI1_WA (Digital Voice Interface) CMOS 2.8V

24 TX_TRACE O TX Data for debug monitor/ DVI1_CLK (Digital Voice Interface) CMOS 2.8V

Prog. / Data + Hw Flow Control

1

On this line a maximum of 10nF bypass capacitor is allowed

GC864 Hardware User Guide

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Pin Signal I/O Function

Internal

Pull up

Type

25 C103/TXD I Serial data input (TXD) from DTE CMOS 2.8V

26 C104/RXD O Serial data output to DTE CMOS 2.8V

27 C107/DSR O

Output for Data set ready signal (DSR) to DTE/ DVI1_RX (Digital Voice

Interface)

CMOS 2.8V

28 C106/CTS O Output for Clear to send signal (CTS) to DTE CMOS 2.8V

29 C108/DTR I Input for Data terminal ready signal (DTR) from DTE CMOS 2.8V

30 C125/RING O Output for Ring indicator signal (RI) to DTE CMOS 2.8V

31 C105/RTS I Input for Request to send signal (RTS) from DTE CMOS 2.8V

32 C109/DCD O Output for Data carrier detect signal (DCD) to DTE CMOS 2.8V

DAC and ADC

37 ADC_IN1 AI Analog/Digital converter input A/D

38 ADC_IN2 AI Analog/Digital converter input A/D

39 ADC_IN3 AI Analog/Digital converter input A/D

40 DAC_OUT AO Digital/Analog converter output D/A

Miscellaneous Functions

45 STAT_LED O Status indicator led CMOS 1.8V

46 GND - Ground Ground

49 PWRMON O Power ON Monitor CMOS 2.8V

50 VAUX1 - Power output for external accessories -

51 CHARGE AI Charger input Power

52 CHARGE AI Charger input Power

53 ON/OFF* I

Input command for switching power ON or OFF (toggle command). The

pulse to be sent to the GC864-QUAD/PY must be equal or greater than

1 second.

47K

Ω

Pull up to VBATT

54 RESET* I Reset input

55 VRTC AO VRTC Backup capacitor Power

36 DVI2_CLK - Digital Voice Interface Clock 4.7K

Ω

CMOS 2.8V

Telit GPIO

56 TGPIO_19 I/O Telit GPIO19 Configurable GPIO CMOS 2.8V

57 TGPIO_11 I/O Telit GPIO11 Configurable GPIO CMOS 2.8V

58 TGPIO_20 I/O Telit GPIO20 Configurable GPIO CMOS 2.8V

59 TGPIO_04 I/O Telit GPIO4 Configurable GPIO / RF Transmission Control CMOS 2.8V

60 TGPIO_14 I/O Telit GPIO14 Configurable GPIO CMOS 2.8V

61 TGPIO_15 I/O Telit GPIO15 Configurable GPIO CMOS 2.8V

62 TGPIO_12 I/O Telit GPIO12 Configurable GPIO CMOS 2.8V

63 TGPIO_10 I/O Telit GPIO10 Configurable GPIO / DVI2_TX (Digital Voice Interface) CMOS 2.8V

64 TGPIO_22 I/O Telit GPIO22 Configurable GPIO CMOS 1.8V

65 TGPIO_18 I/O Telit GPIO18 Configurable GPIO / DVI2_RX (Digital Voice Interface) CMOS 2.8V

66 TGPIO_03 I/O Telit GPIO3 Configurable GPIO CMOS 2.8V

67 TGPIO_08 I/O Telit GPIO8 Configurable GPIO CMOS 2.8V

GC864 Hardware User Guide

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Pin Signal I/O Function

Internal

Pull up

Type

68 TGPIO_06 / ALARM I/O Telit GPIO6 Configurable GPIO / ALARM CMOS 2.8V

70 TGPIO_01 I/O Telit GPIO1 Configurable GPIO CMOS 2.8V

71 TGPIO_17 I/O Telit GPIO17 Configurable GPIO / DVI2_WA (Digital Voice Interface) CMOS 2.8V

72 TGPIO_21 I/O Telit GPIO21 Configurable GPIO CMOS 2.8V

73 TGPIO_07 / BUZZER I/O Telit GPIO7 Configurable GPIO / Buzzer CMOS 2.8V

74 TGPIO_02 / JDR I/O Telit GPIO02 I/O pin / Jammer detect report CMOS 2.8V

75 TGPIO_16 I/O Telit GPIO16 Configurable GPIO CMOS 2.8V

76 TGPIO_09 I/O Telit GPIO9 Configurable GPIO CMOS 2.8V

77 TGPIO_13 I/O Telit GPIO13 Configurable GPIO CMOS 2.8V

78 TGPIO_05/ RFTXMON I/O Telit GPIO05 Configurable GPIO / Transmitter ON monitor CMOS 2.8V

RESERVED

17 -

33 -

34 -

41 -

42 -

43 -

44 -

47 -

48 -

79 -

69 -

80 -

35 DVI1_TX - Digital Voice Interface Transmitted Data 4.7K

Ω

CMOS 2.8V

NOTE:

The GC864 family Wireless Modules (GC864-QUAD and GC864-PY) has two DVI ports

on the system interface.

Only one port can be selected and be active at the time. The choice of DVI port

depends on the needs of the application, but Telit suggests that applications only use

the DVI2 port as this minimizes the impact on the module functionality.

GC864 Hardware User Guide

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NOTE:

Reserved pins must not be connected.

NOTE:

RTS must be connected to the GND (on the module side) if flow control is not used.

NOTE:

If not used, almost all pins must be left disconnected. The only exceptions are the

following pins

2

:

Pin Signal Function

1 VBATT Main power supply

2 VBATT Main power supply

3 VBATT Main power supply

4 VBATT Main power supply

5 GND Ground

6 GND Ground

7 GND Ground

46 GND Ground

25 C103/TXD Serial data input (TXD) from DTE

26 C104/RXD Serial data output to DTE

31 C105/RTS Input for Request to send signal (RTS) from DTE

53 ON/OFF* Input command for switching power ON or OFF (toggle command).

54 RESET* Reset input

4.1.1. GC864-QUAD/PY Antenna Connector

The GC864-QUAD/PY module is equipped with a 50  RF connector from Murata,

GSC type P/N MM9329-2700B.

The counterpart suitable is Murata MXTK92 Type or MXTK88 Type.

Moreover, the GC864-QUAD/PY has the antenna pads on the back side of the PCB.

This allows the manual soldering of the coaxial cable directly on the back side of the

PCB. However, the soldering is not an advisable solution for a reliable connection of

the antenna.

2

RTS should be connected to the GND (on the module side) if flow control is not used.

GC864 Hardware User Guide

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5. Hardware Commands

5.1. Turning ON the GC864-QUAD / PY

To turn the GC864-QUAD / PY on, the pad ON# must be tied low for at least 1 second

and then released. A pulse duration less than 1 second should also start the power

on procedure, but this is not guaranteed.

The maximum current that can be drained from the ON# pad is 0,1 mA.

A simple circuit to do it is:

TIP:

To check if the device has powered on, the hardware line PWRMON must be

monitored. After 900ms the line raised up the device could be considered powered

on.

PWRMON line rises up also when supplying power to the Charge pad.

NOTE:

Do not use any pull up resistor on the ON# line, it is internally pulled up. Using pull

up resistor may bring to latch up problems on the GC864-QUAD / PY power regulator

and improper power on/off of the module. The line ON# must be connected only in

open collector configuration.

In this document all the lines that are inverted, hence have active low signals are

labeled with a name that ends with a "#" or with a bar over the name.

The GC864-QUAD / PY turns fully on also by supplying power to the Charge pad

(Module provided with a battery on the VBATT pads).

GC864 Hardware User Guide

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For example:

1- Let us assume you need to drive the ON# pad with a totem pole output of a +3/5 V

microcontroller (uP_OUT1):

2- Let us assume you need to drive the ON# pad directly with an ON/OFF button:

A flow chart with proper turn on procedure is detailed below:

GC864 Hardware User Guide

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5.2. Turning OFF the GC864-QUAD / PY

Turning off of the device can be done in three ways:

• by software command (see GC864-QUAD / PY Software User Guide)

• by tying low pin ON#

Either ways, the device issues a detach request to network informing that the device

will not be reachable any more.

To turn OFF the GC864 via pin ON#, this must be tied low for at least 1s and then

released.

The same circuitry and timing for the power on shall be used.

The device shuts down after the release of the ON# pin.

The following flow chart shows the proper turnoff procedure:

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Telit Wireless Solutions GC864 Series Hardware User's Manual

Telit Wireless Solutions GC864 Series Hardware User's Manual

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